Motion in a Straight Line - Result Question 27
28. A car accelerates from rest at a constant rate for some time, after which it decelerates at a constant rate and comes to rest. If the total time elapsed is , then the maximum velocity acquired by the car is
[1994]
(a)
(b)
(c)
(d)
Show Answer
Answer:
Correct Answer: 28. (d)
Solution:
velocity,
acceleration
Acceleration is zero at
In Fig.
But
or,
If a body starting from rest accelerates at a constant rate
Distance travelled by the body